Creating current downloads still uses url only

Problem/Motivation

The creation of a "current download" reference datasets directly and when trying to package up files into the zip, it uses only the url provided by the dataset which may not be reachable by the codebase since it is trying to reach the decoupled location. To be safe, it ought to try the stream first and fall back to the URL if stream fails.

#3557421: Choose internal stream first

Acceptance Criteria

Testing steps